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Sharepoint 2010 No authority could be contacted for authentication.

Posted on 2014-10-10
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Last Modified: 2014-10-11
I have a server in our DMZ that houses two websites on IIS 7. Our router is currently configured to allow any and all traffic from the DMZ to the Trust (just for troubleshooting this issue).

Both websites are Sharepoint 2010 sites. One website works just fine being accessed externally via https (port 443) with the bindings set to All Unassigned (I have tried All Unassigned and the specific server IP as well). This site has no issues whatsoever.

I just turned up another Sharepoint 2010 site today and internally I have no issues but trying to access it externally I get "No authority could be contacted for authentication". It prompts me for my domain credentials but never goes further than that. On the web server itself if I try and access the site through IIS 7 it prompts for domain creds and it goes through. I currently have the bindings set to the server IP and using port 443. I have also tried random ports as well. Here is what I've done:

-Tried two different SSL certs
-Rejoined the domain a few times on the webserver
-Restart IIS a dozen times

At this point I am at a loss. My alternate access mappings all appear correct. Is there anything I'm missing? As I said before, internally the site works perfect but externally I get the above error.
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Question by:oriontech2
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Found the problem, I forgot to change one VIP on the router.
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